Method configure_task(Task(some_func)) doesn't register the callable in the scheduler (left at "None", causing the scheduler to crash)

[M4rt1nCh]

Things to check first

• I have checked that my issue does not already have a solution in the FAQ

• I have searched the existing issues and didn't find my bug already reported there

• I have checked that my bug is still present in the latest release

Version

4.0.0a5post80

What happened?

We're using version 4.0.0a5.post80 of apscheduler and discovered an issue when configuring tasks on a scheduler passing a "Task" object. Basically, the Callable I'm passing is not stored as part of the Scheduler Task.

import asyncio

from apscheduler import AsyncScheduler, Task

async def my_func():
    print("Hello World")
    return 42

async def main():
    async with scheduler as s:
        # Generate the Task object
        the_task = Task(id="test", func="__main__:my_func", job_executor="threadpool")
        # Register the Task with the Scheduler
        await s.configure_task(the_task)
        # print the tasks
        # Note that this line returns something like this:
        # [Task(id='test', func=None, job_executor='threadpool', max_running_jobs=None, misfire_grace_time=None, metadata={}, running_jobs=0)]
        print(await s.get_tasks())
        await s.add_job("test")
        await scheduler.run_until_stopped()

asyncio.run(main())

Scheduler crashed
  + Exception Group Traceback (most recent call last):
  |   File "/workspaces/myproject/.venv/lib/python3.12/site-packages/apscheduler/_schedulers/async_.py", line 784, in run_until_stopped
  |     async with create_task_group() as task_group:
  |                ^^^^^^^^^^^^^^^^^^^
  |   File "/workspaces/myproject/.venv/lib/python3.12/site-packages/anyio/_backends/_asyncio.py", line 763, in __aexit__
  |     raise BaseExceptionGroup(
  | ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
  +-+---------------- 1 ----------------
    | Traceback (most recent call last):
    |   File "/workspaces/myproject/.venv/lib/python3.12/site-packages/apscheduler/_schedulers/async_.py", line 1012, in _process_jobs
    |     func = self._get_task_callable(task)
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/workspaces/myproject/.venv/lib/python3.12/site-packages/apscheduler/_schedulers/async_.py", line 974, in _get_task_callable
    |     raise CallableLookupError(
    | apscheduler._exceptions.CallableLookupError: Task test requires a locally defined callable to be run, but no such callable has been defined. Call scheduler.configure_task('test', func=...) to define the local callable.
    | 
  ...

When debugging, it turns out that the parameter passed here is actually None. This only happens as you pass a Task object to the scheduler. If you pass in the callable function directly, things work like a charm.

Your guidance / support is highly appreciated. Thanks a lot.

How can we reproduce the bug?

see above :)